Though results from last Friday’s MRI showed some healing to his injured right-side rib, Dahl is still not ready for baseball activities. He will have to undergo another MRI in about 10 days to measure his progress.

“The bone is healing, which is a great sign,” manager Bud Black said Monday. “It’s not totally healed, and there is no activity yet for David, as far as baseball activity. But he is going to continue to do his work in the training room and work out his legs. But upper body, as far as workouts go, is still at least 10 days away.”

Dahl arrived at spring training as the favorite to win the starting job in left field and build off an excellent rookie season for the Rockies, but he was diagnosed with a stress reaction of his sixth rib early in camp. Dahl, the 10th player selected in the 2012 draft, hit .315 with seven homers in 63 games last season, his first in the majors. He has played in just two Cactus League games this spring.

Marquez impresses. Right-hander German Marquez, one of four young pitchers vying for two open spots in the season-opening rotation, flashed a major-league curve ball in an impressive backfield game against the San Francisco Giants‘ Triple-A lineup.

Marquez, 22, did not allow a hit through four innings before finishing five innings with 69 pitches, including two hits, no runs, six strikeouts and two walks. He struck out three batters with a curveball and another with a slider.

“My confidence is returning with my out pitch,” he said. “The last few outings, it was a little bit lost. Sometimes you need to keep working and figure it out.”

Rusin improves. Left-hander Chris Rusin, out since March 3 with a sore right oblique, is making steady progress toward his return. Rusin, 30, pitched his first bullpen session Monday. Rusin, whom the Rockies have penciled in as either a fifth starter or long reliever, won’t be ready to start games by the season-opening game at Milwaukee on April 3, but he might be ready for bullpen work.

Footnotes. Veteran right-hander Chad Qualls, who hasn’t pitched since March 1 due to soreness in his right forearm, threw for the first time Monday, though it was not a bullpen session. … Right-hander Jairo Diaz pitched in his first game since missing all of 2016 following Tommy John surgery. He retired the first two hitters he faced before giving up five runs on five hits and a walk in the eighth. His fastball reached 98.8 mph, but he was rusty and had trouble commanding his changeup and slider. … Right-hander C.C. Lee and outfielders Noel Cuevas and Mike Tauchman were reassigned to minor-league camp.